太阳高能粒子(SEP)事件是重要的灾害性空间天气事件之一，有关SEP的传播和加速机制方面的研究一直是空间天气学研究的前沿课题。本项申请利用已有的三维COIN-TVD MHD模型，构建以观测数据为约束的三维CME驱动激波模型、激波加速粒子模型以及SEP在三维MHD太阳风背景场传播模型的耦合模型，主要模拟与CME驱动激波相关的SEP加速及传播过程。通过针对具体SEP事件的数值模拟，将观测数据分析工作与模型计算密切有机地结合，不断检验和改进所发展的SEP加速和传播模型，提高SEP事件的预报能力，期望更深层次理解SEP在日球层中的传播和加速机制。

Solar Energetic Particles (SEPs) as one kind of the disastrous space weather events could cause the destructive damages to spacecraft systems and constrain human activities in the space．To understand the transport and acceleration processes of SEPs is an important issue in alleviating these damages. In this application, we try to construct the hybrid model constrained by the observations. The hybrid model contains: (1) the 3D CME-driven shock model by using the existed 3D COIN-TVD MHD model, (2) the shock-accelerated particle model, and (3) the SEP transport model in the 3D MHD solar wind background. Then, through combing analyzing the observational data and modeling, we try to test and improve the ability of this hybrid model studying SEP acceleration and propagation. Furthermore, we hope to enhance the prediction ability of the SEP events, and enhance our understanding to the physics of SEP events.